Skip to main content

Loose Gemstone 10ct

to
86
6
71
49
24
21
20
18
13
10
7
4
4
3
3
2
2
1
1
1
1
1
7
1
Sort By
10ct Shield Amethyst 'Eleanor' Fantasy/Fancy Cut
Located in Toronto, Ontario
First Lady of the United States. Description: Gem Type: Amethyst Number of Stones: 1 Weight: 10 cts
Category

2010s Brazilian Loose Gemstones

Materials

Amethyst

10ct Shield Amethyst 'Eleanor' Fantasy/Fancy Cut
10ct Shield Amethyst 'Eleanor' Fantasy/Fancy Cut
Free Shipping
W 0.79 in D 0.41 in L 0.6 in
10ct Shield Amethyst 'Eleanor' Fantasy/Fancy Cut
Located in Toronto, Ontario
Description: Gem Type: Amethyst Number of Stones: 1 Weight: 10 cts Measurements: 20.00 x 15.00 x
Category

2010s Brazilian Loose Gemstones

Materials

Amethyst

10ct Shield Amethyst 'Eleanor' Fantasy/Fancy Cut
10ct Shield Amethyst 'Eleanor' Fantasy/Fancy Cut
Free Shipping
W 0.79 in D 0.41 in L 0.6 in
10ct Pear Amethyst 'Bridget' Fantasy/Fancy Cut
Located in Toronto, Ontario
Description: Gem Type: Amethyst Number of Stones: 1 Weight: 10 cts Measurements: 18.00 x 13.00 x
Category

2010s Brazilian Loose Gemstones

Materials

Amethyst

10ct Pear Amethyst 'Bridget' Fantasy/Fancy Cut
10ct Pear Amethyst 'Bridget' Fantasy/Fancy Cut
Free Shipping
W 0.71 in D 0.34 in L 0.52 in
10ct Cushion Blue Aquamarine GIA Certified, Santa Maria
Located in Toronto, Ontario
information Item Description: One loose stone Weight: 10 carats Measurements: 17.79 x 12.24 x 6.96 mm Comments
Category

2010s Brazilian Loose Gemstones

Materials

Aquamarine

10ct Cushion Blue Aquamarine GIA Certified, Santa Maria
10ct Cushion Blue Aquamarine GIA Certified, Santa Maria
Free Shipping
W 0.71 in D 0.28 in L 0.49 in
10+ct Unique Amethyst Cut by Award Winning Cutter (Work is in Museums!)
Located in Methuen, MA
/designer had a price of $600/ct on this. We can offer this piece at $300/ct. Save $3,225 off the retail
Category

2010s Moroccan Loose Gemstones

Materials

Amethyst, Quartz

Ethiopian Opal Pair total 5 ct 12 mm x 10 mm AAA+ Great Fire Create your Earring
Located in Viena, Viena
this pair of very fine Ethiopian opal cabochons can be a amazing jewelry, 2 opal with 12 x 10 mm
Category

2010s Modern Loose Gemstones

Materials

Opal

GLA Certificate Tourmaline Afghanistan green-mint 8.45 ct Investment Gemstone
Located in Viena, Viena
brilliance of the Afghan tourmalines, approx. 8.45 ct, 11.7 x 10 x 10.5 mm, flawless, a great investment
Category

2010s Modern Loose Gemstones

Materials

Tourmaline

4.15 carats natural red rubellite tourmaline cushion cut louple clean gemstone
Located in Jaipur, RJ
- Rubellite Tourmaline Weight - 4.15 Ct Size - 10 MM Color - Reddish Pink Piece - 1 Shape - Cushion
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite, Tourmaline

Natural London Blue Topaz Gemstone 23.05 Ct Round Mixed Cut.
Located in AMSTERDAM, NL
Offered Round Mixed cut Natural Gemstone Flawless London Blue Topaz 23.05 ct. It's 'AAA' Quality
Category

2010s Brazilian Loose Gemstones

Materials

Topaz, Blue Topaz

Natural London Blue Topaz Gemstone21.23 Ct Oval Mixed Cut.
Located in AMSTERDAM, NL
Offered Oval Mixed cut Natural Gemstone Flawless London Blue Topaz 21.23 ct. It's 'AAA' Quality
Category

2010s Brazilian Loose Gemstones

Materials

Topaz, Blue Topaz

GIA Certified 9.85 Carat Natural Color Change Alexandrite
Located in New York, NY
This stunning oval nearly 10 carat genuine alexandrite – a rare color-change Alexandrite of this
Category

2010s Sri Lankan Loose Gemstones

Materials

Alexandrite

58.40ct Clear Quartz with Two Actinolite Stars - Rare
Located in Methuen, MA
occasionally seen on the market about 10+ years ago and quickly disappeared as this wasn't a large deposit
Category

2010s Loose Gemstones

Materials

Quartz

Unheated Saphires yellow purple NATURAL COLOR 0.96 ct Ilakaka Mine Madagascar
Located in Viena, Viena
mine Madagascar yellow purple NATURAL COLOR total approx. 0.96 ct in the size 6 x 4.1 x 2.4 mm
Category

2010s Modern Loose Gemstones

Materials

Tanzanite

Antique Butterfly Brooch Pin 2ct Ruby 1.5 ct Diamond 10K Gold Silver / 3.9gr.
Located in SE
ct. Both stones set in Green Gold bezels with closed and likely foiled under backs in 10K Rose Gold
Category

Antique Mid-18th Century European Renaissance Revival Brooches

Materials

Diamond, Ruby, 10k Gold, Silver

Heaven's Muse Gold Australian Boulder Opal Necklace with Diamonds, NIXIN Jewelry
Located in Los Angeles, CA
Australian Boulder Opal, .10ct G VS Diamonds • We use natural gemstones, and some inclusions and slight
Category

2010s American Contemporary Pendant Necklaces

Materials

Opal, Diamond, Gold, 14k Gold, Yellow Gold

Natural Purple Lavender Spinel Halo Ring in 18K White Gold Diamond
Located in Kowloon, HK
This stunning beautiful purple lavender loose spinel is handpicked by us, and we handcrafted it
Category

2010s Hong Kong Modern Engagement Rings

Materials

Diamond, Spinel, White Gold

Antique Ring 2ct Sapphire 2.8 ct Diamonds solid 14K Rose Gold Ø 6.5 US /4.9gr
Located in SE
+ 10 x Ø 1.5 mm / 0.02 ct each. Counting : 0.56 ct + 1.26 ct + 0.28 ct + 0.32 ct + 0.16 ct + 0.1 ct
Category

Vintage 1920s European Art Deco Cluster Rings

Materials

Diamond, Blue Sapphire, 14k Gold, Rose Gold

Antique Bracelet 5.5 ct Sapphire 2.3ctw Diamonds 18K Gold Platinum /17.7cm/9.4gr
Located in SE
mm deep / ca. 5.5 ct. Sapphire demonstrates inclusions and color zoning under x 10 magnification
Category

Vintage 1930s German Art Deco Link Bracelets

Materials

Diamond, Sapphire, 18k Gold, Platinum

Antique Necklace natural 25ctw. Amethyst Pearls 850 Gilt Silver/ 43cm/16.5 gr
Located in SE
/ ca. 4 ct + 3 stones ca. 10 mm x 8 mm x 4.95 mm / ca 2ct. each + 10 stones ca. 9 mm x 7 mm x 5.5 mm
Category

Early 20th Century European Art Nouveau Pendant Necklaces

Materials

Amethyst, Pearl, Silver, Gold

Antique Trinity Halo Ring 1.4 ctw natural Sapphire Diamonds 18K Gold Ø5.5US/4.7g
Located in SE
parts measures 22 mm x 10 mm x 5 mm deep. Natural /untreated medium Blue colored Sapphires: central Ø
Category

Vintage 1910s European Art Nouveau Cluster Rings

Materials

Diamond, Sapphire, 18k Gold

Antique Ring 0.2 ct Diamond 0.2ct Ruby solid 14K Rose Gold Silver Ø US5.25/1.6gr
Located in SE
Diamond Ø 3.5 mm / ca.0.2 ct /color G,H/SI in Silver bezel and old cut Ruby in Rose Gold bezel Ø 3 mm / ca
Category

Vintage 1920s European Retro Cluster Rings

Materials

Diamond, Ruby, 14k Gold, Rose Gold, Silver

1976 Ring 0.75ct Emerald Diamonds solid 18K Gold US7 / 5.5gr
Located in SE
mm x 2.5 mm deep/ ca. 0.75 ct accented with 6 old diamond cut Diamonds Ø 1.5 mm / 0.015 ct each
Category

Vintage 1970s Swedish Retro Cluster Rings

Materials

Diamond, Emerald, 18k Gold

1918 Antique Halo Ring solid 18KGold 0.66ct Sapphire 0.7ct Diamonds Ø6US/2.4gr
Located in SE
under x 10 magnification. Sapphire measures: Ø 5.5 mm x 3 mm deep / ca. 0.66 ct. 13 Diamonds, all old
Category

Vintage 1910s Swedish Art Deco Cluster Rings

Materials

Sapphire, Diamond, 18k Gold

Antique European Halo Ring 1ctw Diamonds solid 18K Gold Silver Ø US10.25 /4.6g
Located in SE
arranged in flower pattern, 10 with closed backs and all foiled under, 2 on the flanks with open backs
Category

Vintage 1910s German Art Nouveau Cluster Rings

Materials

Diamond, Silver, 18k Gold

Antique halo ring 1ct Sapphire 0.8ctw Diamonds 18K Gold Platinum US4.75/2.8gr
Located in SE
Beautiful Halo Ring in solid 18K Yellow Gold with natural Blue Sapphire and 10 Diamonds in White
Category

Vintage 1910s Swedish Art Nouveau Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, Platinum

Vintage European stud Halo Earrings Rubies Diamonds solid 18K Gold / 2.63 gr
Located in SE
. 1960s -1970s. Two bezel set oval cut natural rosy Red Rubies 4 x 3 mm / ca. 03 ct each, both
Category

Vintage 1960s English Retro Stud Earrings

Materials

Diamond, Ruby, 18k Gold

Antique Danish Halo Ring 1 ct Sapphire 1.5ctw Diamonds 18K Gold Ø5.25/7gr
Located in SE
Beautiful old Halo Ring, band, and crown in solid 18K Gold featuring natural Blue Sapphire and 10
Category

Vintage 1920s Danish Art Deco Cluster Rings

Materials

Diamond, Sapphire, 18k Gold

Antique Ring natural 0.4 ct Ruby Diamonds solid 18K Gold Ø 6US/ 2.7 gr
Located in SE
stones is 10 mm x 7 mm. Ruby Ø 4 mm /ca 0.4 ct with inclusions and internal flaws visible under x 10
Category

Vintage 1920s European Art Deco Cluster Rings

Materials

Diamond, Ruby, Sapphire, 18k Gold

1911 John 's Ring Moonstone solid 23K Gold Ø US 7.25 /6 gr
Located in SE
, bezel set natural Moonstone measuring Ø 10 mm x 5.85 mm deep / ca. 5 ct. I suspect that the bezel is
Category

Vintage 1910s Swedish Art Nouveau Solitaire Rings

Materials

Moonstone, Gold, 22k Gold

1935 Three 0.45ctw Diamonds Ring solid Platinum Ø 6.5US / 1.8gr
Located in SE
comfortable everyday wear. Diamonds measure Ø 3 mm x 1.7 mm deep / ca. 0.15 ct each. Total Diamond weight ca
Category

Vintage 1930s Swedish Retro Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

1918 Salomon's Halo Ring 0.7ct Sapphire Diamonds solid 18K Gold Ø 6.75 US /2.2 g
Located in SE
10 Diamonds in White Gold settings. Natural Sapphire of old European oval cut , color is medium Blue
Category

Vintage 1920s European Art Nouveau Cluster Rings

Materials

Diamond, Sapphire, 18k Gold

1943 Ring 5.5 ct natural Cornflow Blue Sapphire solid 18K Gold Ø US4.75/ 4gr
Located in SE
of oval cut 12 mm x 10 mm x 5.12 mm / ca. 5.5 ct that demonstrates peculiar internal inclusions and
Category

Vintage 1940s Swedish Retro Solitaire Rings

Materials

Diamond, Blue Sapphire, 18k Gold

Antique European Ring 2.7 ctw. Diamonds solid 18K Gold Silver ØUS6/ 10gr
Located in SE
shaped crown 21 mm x 10 mm deep consisting of 3 circular tiers of Silver clusters holding 25 rose cut
Category

Antique Late 19th Century European Renaissance Revival Wedding Rings

Materials

Diamond, 18k Gold, Silver

1937 Nordic Ring Emerald Diamonds solid 18K Gold ØUS 7.75US / 3.75 gr
Located in SE
mm x 4 mm x 3.2 mm deep /0.5 ct accented with 6 old diamond cut Diamonds Ø 2 mm / 0.03 ct each
Category

Vintage 1930s Swedish Art Deco Solitaire Rings

Materials

Diamond, Emerald, 18k Gold

1928 Nordic Wedding Ring Pearl Diamonds solid 18K Gold ØUS7 /3.1gr
Located in SE
5 mm in claws accented with 10 rose cut Diamonds Ø 2 mm / 0.03 ct each with open backs. Clear stones
Category

Vintage 1920s Swedish Art Deco Cluster Rings

Materials

Diamond, Pearl, 18k Gold

1910 Alliance Ring 1ctw natural Sapphire solid 18K Gold Ø 8.25 US / 2.2 gr
Located in SE
blue. Internal flows, minor inclusions, and zoning are visible under x 10 magnification. Central stone
Category

Vintage 1910s Swedish Art Nouveau Solitaire Rings

Materials

Sapphire, 18k Gold

Antique Art Deco Ring 1ct Sapphires Diamonds 14K Gold Platinum Ø US7.25 /2.7gr
Located in SE
, largest sapphire in the center 6.25 mm x 4.25 mm / ca. 0.54 ct , second 5.25 mm x 3.75 mm , third 4.75 mm
Category

Vintage 1920s European Retro Cluster Rings

Materials

Diamond, Sapphire, 14k Gold, Platinum

Vintage Ring Topaz Garnet Citrine Peridot Amethyst solid 14K Gold ØUS9.75/ 7.8gr
Located in SE
. Largest blue Topaz is 10 mm wide / ca 3.5 ct;cognac colored Citrine is 8.5m wide /1.8ct ; Garnet 7.5mm
Category

Vintage 1970s European Retro Wedding Rings

Materials

Amethyst, Citrine, Garnet, Peridot, Topaz, 14k Gold

Antique European Ring 0.5ctw Ruby solid 18K Gold Ø 7.5 US / 1.8gr
Located in SE
. Hallmarked 18 ct. No hallmarks of the maker. The crown part with stones is 10 mm wide. Two central stones 3
Category

Early 20th Century European Art Deco Solitaire Rings

Materials

Ruby, 18k Gold

Antique Ring 1ct Sapphire 1 ctw Diamonds solid 14K Rose ØUS 5.5 / 3.4gr
Located in SE
/ ca 1 ct. Sapphire is of medium /darker Blue variety with angular color zoning and inclusions well
Category

Early 20th Century European Art Deco Solitaire Rings

Materials

Diamond, Sapphire, Silver, 14k Gold

1923 Ring natural 3.25ct Sapphire solid 18K Yellow Gold Ring Ø 6.5US / 3.8gr
Located in SE
Sapphire of oval cut 10 mm x 8 mm x 3.33 mm / ca. 3.25 ct. Stone demonstrates color zoning typical for
Category

Vintage 1920s Swedish Art Deco Solitaire Rings

Materials

Sapphire, 18k Gold

Antique European Ring 1.3 ctw / 5Diamonds 23K/18K Gold Silver ØUS 5.25/ 2.8gr
Located in SE
for everyday wear. Band is solid 23 ct Gold with distorted hallmarks. Crown's back side in Orange 18K
Category

Antique Early 1900s European Art Nouveau Cluster Rings

Materials

Diamond, 24k Gold, Silver

Antique Cross Over Ring 0.45ctw. Diamonds Pearl 18K Gold Platinum ØUS7.5 /1.9gr
Located in SE
cut diamonds. Largest Diamond Ø 4 mm x 2.6mm deep /ca.03 ct., 10 minors of gradual diameters of Ø 1.5
Category

Vintage 1910s Swedish Art Nouveau Cluster Rings

Materials

Diamond, Pearl, 18k Gold, Platinum

1901 Nordic Ring 0.7 ct natural Red Ruby solid 18K Gold ØUS5.75 /2.05 gr
Located in SE
mm x 4.5 mm x 3 mm x 3.35 mm deep / ca. 0.7 ct. This Ruby is transparent of a vibrant Red color, very
Category

Antique Early 1900s Swedish Art Nouveau Solitaire Rings

Materials

Ruby, 18k Gold

Antique Chineese Bracelet Jade Carnelian Giilt Silver /51gr
Located in SE
Ø 10 mm x 4 mm deep / 0.6 ct each. Origin: China, early 20th century. No hallmarks. Measurements
Category

Vintage 1920s Chinese Arts and Crafts Bangles

Materials

Carnelian, Jade, Silver, Gold-filled

1929 Nordic Clover Ring solid 18K Gold 1ctw Ruby 0.5ct Diamond Ø 6US/ 2.8gr
Located in SE
= made in 1929. Crown is 10 mm x 8 mm x 5 mm deep. Old diamond cut Diamond Ø 5 mm x 2.75 mm / ca 0.56 ct
Category

Vintage 1920s Swedish Art Deco Cluster Rings

Materials

Diamond, Ruby, 18k Gold

Antique German Ring 3ct Aquamarine solid 18K Gold Ø 6.75 US /4.4gr
Located in SE
Aquamarine stone 10 mm x 8 mm x 4.6 mm / ca. 3 ct ct, color light Blue with tint of Green. The Crown is 16
Category

Vintage 1930s German Art Deco Solitaire Rings

Materials

Aquamarine, 18k Gold

1948 Retro Ring solid 18K Gold 20ct Citrine Ø 7.75 US /15.6 gr
Located in SE
Yellow Gold, step- cut Citrine 18 mm x 13 mm x 10 mm deep / ca 20 ct. The stone is of the finest quality
Category

Vintage 1940s Swedish Retro Solitaire Rings

Materials

Citrine, 18k Gold

Antique Ring natural 3.5ct Green Jade solid 18K Gold ØUS 5.5 / 10gr
Located in SE
about 13 mm x 8 mm x 4.75 mm deep / ca. 3.5 ct. No hallmarks. Metal tested solid 18K Gold. Face is
Category

Vintage 1930s European Art Deco Cluster Rings

Materials

Jade, 18k Gold

Antique Halo Ring 1 ct Sapphire Diamonds solid 14K Rose Gold US 3.75 / 2.8gr
Located in SE
stones measures 17.5 mm x 8 mm 4.5 mm deep. Sapphire 10 mm x 3.5 mm x 2.75 mm deep / ca. 1 ct. Each
Category

Vintage 1920s European Art Deco Cluster Rings

Materials

Diamond, Sapphire, Rose Gold, 14k Gold

Antique European Ring Diamonds solid 18K Gold Ø 9.75 US / 2.8gr
Located in SE
stone Ø 3.25mm /0.2 ct, color ca. F, G / clarity VS. Hallmarked 18K, no marks of the maker. This ring
Category

Vintage 1920s European Art Nouveau Engagement Rings

Materials

Diamond, 18k Gold, Platinum

1938 Artur & Lydia Ring natural 1.55 ct Blue Sapphire solid 18K Gold ØUS7/4.4gr
Located in SE
Sapphire of Blue medium depth color, oval diamond cut 8 mm x 6 mm x 2.2 mm / ca. 1.55 ct. Stone
Category

Vintage 1930s Swedish Art Deco Solitaire Rings

Materials

Blue Sapphire, 18k Gold

1907 Signet Unisex Ring Carnelian solid 23K Gold US11.5 /11.4 gr
Located in SE
x 10 mm x 2.75 deep / ca 3 ct. Stone has well polished flat surface. Shoulders with wavy ornaments
Category

Antique Early 1900s Swedish Art Nouveau Signet Rings

Materials

Carnelian, 22k Gold

Antique Ring 0.5 ctw Diamonds solid 14 Gold Platinum Ø 6.5 US/ 3.2 gr
Located in SE
with four bezel set old diamond cut Diamonds Ø 3 mm / 0.12 ct each accented with 11 pave set rose cut
Category

Vintage 1920s European Art Nouveau Wedding Rings

Materials

Diamond, 14k Gold, Platinum

1977 Halo Ring solid 18K Gold 2.45ct Sapphire 0.7ct Diamonds Ø6.5US/5.6g
Located in SE
. Untreated stone, inclusions and distinctive color banding are visible under x 10 magnification. 12 Diamonds
Category

Vintage 1970s English Retro Cluster Rings

Materials

Diamond, Sapphire, 18k Gold

1929 Nordic Ring 1ctw Diamonds solid 18K Gold Ø 5.5 US /3gr
Located in SE
under x 10. 12 old diamond cut Diamonds on perimeter Ø range 2.5 mm - 2 mm weight about 0.7 ct together
Category

Vintage 1920s Swedish Art Deco Cluster Rings

Materials

Diamond, 18k Gold

Antique Intaglio Signet Ring Carnelian solid 20K Gold Ø US8 / 3.7gr
Located in SE
measuring 12 mm x 10 / ca. 5 ct. Very well done hand carving work - it makes fine impression on soft
Category

Antique Early 1900s Swedish Art Nouveau Signet Rings

Materials

Carnelian, 18k Gold

Men Ring natural 10.5 ct Sapphire Diamonds solid 18K Yellow Gold Size US8 / 13gr
Located in SE
mm x 11.75 mm x 6.75 mm deep / ca 10.5 ct. Inclusions, color zoning, "silk", and natural flaws are
Category

Vintage 1930s European Art Deco Solitaire Rings

Materials

Diamond, Sapphire, Yellow Gold

Antique Ring 0.5 Ruby Diamonds solid 18K Rose Gold Ø4.75 US / 2.2 g
Located in SE
, claw set diamond cut natural Red Ruby stone Ø 4.75 /0.5 ct with inclusions visual under x 10
Category

Early 20th Century European Art Deco Solitaire Rings

Materials

Diamond, Ruby, 18k Gold, Silver

1960 Nordic Ring 7ct. Rubellite Diamonds solid 18K Gold Ø10.75 US/ 5gr
Located in SE
Rubellite / Red Tourmaline cabochon cut 15 mm x 10 mm x 5.5 mm deep / ca. 7 ct, of vivid Pink color with
Category

Vintage 1960s Swedish Retro Cluster Rings

Materials

Diamond, Rubelite, 18k Gold

  • 1
Get Updated with New Arrivals
Save "Loose Gemstone 10 Ct", and we’ll notify you when there are new listings in this category.

Loose Gemstone 10ct For Sale on 1stDibs

Surely you’ll find the exact loose gemstone 10ct you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using gold, 18k gold and 14k gold. Find an antique version now, or shop for 128 vintage or 23 modern creation for a more contemporary example of these cherished accessories. If you’re looking for a loose gemstone 10ct from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 21st Century. A loose gemstone 10ct from Berquin and AB Jewelry NYC — each of whom created a beautiful version of this treasured accessory — is worth considering. Take a look at a loose gemstone 10ct featuring diamond from our inventory today to add the perfect touch to your look. See these pages for an old european cut iteration of this accessory, while there are also oval cut cut and cabochon cut versions available here, too. Most of our loose gemstone 10ct for sale are for women, but there are 27 pieces available to browse for men.

How Much is a Loose Gemstone 10ct?

Prices for a loose gemstone 10ct can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $160 and can go as high as $49,999, while this accessory, on average, fetches $1,450.